JP5077739B2 - Packaging method and manufacturing method of packaged goods - Google Patents

Description

  The present invention relates to a packaging method of packaging a package containing contents such as noodle soup, sauce, soy sauce, sauce, etc. with an outer bag, and in particular, the outer surface of the package can be sterilized. Alternatively, the present invention relates to a packaging method capable of maintaining the outer surface of the package in a sterile state.

  The present invention also relates to a method for manufacturing a packaged product having a package containing contents, such as noodle soup, sauce, soy sauce, sauce, and the like, and an outer bag covering the package. The present invention relates to a method for manufacturing a packaged product that can sterilize the outer surface or maintain the outer surface of the package in a sterile state.

  As a method of wrapping contents such as mentsuyu, sauce, soy sauce, sauce, etc. with a packaging member, the resin film being conveyed is folded in half and the mating surface is sealed to form a bag-like packaging member A method of forming and then filling the packaging member with the contents while sealing the packaging member is known. In such a packaging process, in order to preserve the contents of the package for a long period of time without suffering microbial alteration, in many cases, not only the contents but also the inner surface of the packaging member is sterilized. Then, the sterilized package is usually stored in an outer bag and placed in a storage process or a distribution process.

  The following two methods are generally used as a method for sterilizing a package. The first method is a so-called hot pack filling method in which the contents are filled into the packaging member at a high temperature, for example, about 80 ° C., and the contents are sterilized together with the packaging member by the heat of the contents after filling. is there. In the second method, the contents cooled to near room temperature after sterilization are filled in a sterilized filling chamber maintained in a sterile state in a packaging member sterilized in the sterile chamber, and the packaging member is sealed. This is a so-called aseptic filling method.

  By the way, such a package may be used by being placed in close proximity to or in contact with a bento or other foods as seasonings, for example. In this case, it is strongly desired that the outer surface of the packaging member of the package is also sterilized.

  However, according to the hot pack filling method described above, it is not possible to expect a very effective sterilizing effect on the outer surface of the packaging member. In addition, according to the aseptic filling method, the outer surface of the packaging member may be recontaminated with microorganisms or the like in the process after the sterilization treatment.

  The present invention has been made in consideration of such points, and is a method of packaging a package body containing contents with an outer bag, and the outer surface of the package body can be sterilized, or It aims at providing the packaging method of the package which can keep the outer surface of a package in a sterile state.

  The present invention also relates to a method for manufacturing a packaged product having a package containing contents and an exterior bag covering the package, and the outer surface of the package can be sterilized, or the package It aims at providing the manufacturing method of the package which can keep the outer surface of this aseptic condition.

  The packaging method according to the present invention is characterized by comprising the steps of housing a package body containing the contents in an exterior bag and introducing a gas containing hydrogen peroxide into the exterior bag. To do. According to such a packaging method according to the present invention, the interior of the exterior bag including the outer surface of the package and the inner surface of the exterior bag can be sterilized with hydrogen peroxide introduced into the exterior bag. In addition, the process of accommodating a package body in an exterior bag, and the process of introducing the gas containing hydrogen peroxide may perform any process first, and may perform both processes in parallel.

  In the packaging method according to the present invention, the gas released into the aqueous hydrogen peroxide solution and then floating on the aqueous hydrogen peroxide solution may be introduced into the outer bag as the gas containing hydrogen peroxide. According to such a packaging method of the present invention, a gas containing hydrogen peroxide can be easily generated using a simple apparatus.

  In the packaging method according to the present invention, it is preferable that the gas containing hydrogen peroxide is a mixture of hydrogen peroxide and an inert gas. According to such a packaging method according to the present invention, the atmosphere in the exterior bag can be replaced with an inert gas. Thereby, the influence with respect to the content resulting from the oxygen which exists in an exterior bag can be suppressed. In this case, the inert gas is preferably nitrogen.

  Further, in the step of storing the package in the packaging method according to the present invention, a plurality of packages may be stored in one exterior bag.

  A method for manufacturing a packaged product according to the present invention includes a step of storing a package body containing contents in an outer bag, a step of introducing a gas containing hydrogen peroxide into the outer bag, and the package body. And a step of sealing the outer bag that is housed and introduced with the gas. According to such a method for manufacturing a packaged product according to the present invention, the inside of the outer bag including the outer surface of the package and the inner surface of the outer bag can be sterilized by hydrogen peroxide introduced into the outer bag. In addition, the process of accommodating a package body in an exterior bag, and the process of introducing the gas containing hydrogen peroxide may perform any process first, and may perform both processes in parallel.

  In the method for manufacturing a packaged product according to the present invention, the gas released into the aqueous hydrogen peroxide solution and then floating on the aqueous hydrogen peroxide solution is introduced into the outer bag as the gas containing hydrogen peroxide. Also good. According to such a method for manufacturing a packaged product according to the present invention, a gas containing hydrogen peroxide can be easily generated using a simple apparatus.

  Further, in the step of storing the package in the packaged product manufacturing method according to the present invention, a plurality of packages may be stored in one package bag.

  The first packaged product according to the present invention is manufactured by any one of the manufacturing methods described above.

  A second packaged product according to the present invention includes a package body in which contents are packaged, and a sealed outer bag, the outer bag containing the package body together with a gas containing hydrogen peroxide. It is characterized by that.

  In the first and second packages according to the present invention, the gas containing hydrogen peroxide is preferably a mixture of hydrogen peroxide and an inert gas. According to such first and second packaged products according to the present invention, the atmosphere in the exterior bag can be replaced with an inert gas. Thereby, the influence with respect to the content resulting from the oxygen which exists in an exterior bag can be suppressed. In this case, the inert gas is preferably nitrogen.

  In the first and second packaged products according to the present invention, a plurality of packages may be accommodated in the exterior bag.

  According to the packaging method of the present invention, the outer surface of the package can be sterilized, or the outer surface of the package can be maintained in a sterile state.

  According to the method for manufacturing a packaged product according to the present invention, the outer surface of the package can be sterilized, or the outer surface of the package can be maintained in a sterile state.

  According to the packaged product of the present invention, the outer surface of the package can be sterilized, or the outer surface of the package can be maintained in a sterile state.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a schematic view for explaining an embodiment of a packaging method and a method for producing a packaged product according to the present invention. Moreover, FIG. 2 is a figure which shows an example of the packaged goods obtained by the method shown in FIG.

  The method for manufacturing a packaged product in the present embodiment includes a step of storing the package 10 containing the contents in the outer bag 15, a step of introducing a gas containing hydrogen peroxide into the outer bag 15, And a step of sealing the outer bag into which the packaging body 10 is stored and the gas is introduced. In addition, the packaging method in this Embodiment is a method of packaging the package 10 in the exterior bag 15, and is contained in the manufacturing method of a packaged product. Therefore, suppose that the packaging method in this Embodiment was also demonstrated below by demonstrating the manufacturing method of the package in this Embodiment.

  The package 10 in the present embodiment is produced, for example, by filling the sterilized packaging member 11 with the contents and sealing the packaging member 11 in a sterile room. The package 10 produced in this way is in a state in which the outer surface is also sterilized at the time of production. As shown in FIG. 1 and FIG. 2, in the present embodiment, the package 10 is composed of, for example, a packaging bag that divides and stores liquid food products. That is, in the present embodiment, the contents are made up of liquid food items such as noodle soup, soy sauce and sauce. The packaging bag filled with the contents can be formed by folding a film made of, for example, polyethylene and sealing the periphery of the mating surface of the film.

  On the other hand, the exterior bag 15 in the present embodiment can be formed, for example, by heat sealing one end of a film formed into a cylindrical shape by an inflation method. However, the exterior bag 15 is not limited to this aspect, and the shape, material, and the like can be changed as appropriate.

  The package 10 may be stored in the outer bag 15 by the operator's hand, or may be stored in the outer bag 15 by any machine or the like regardless of the hand. Moreover, in the example shown in FIG. 1 and FIG. 2, although the example in which only one package 10 was accommodated in the exterior bag 15 was shown, it is not restricted to this. A plurality of packaging bodies 10 may be stored in one exterior bag 15.

  As shown in FIG. 1, in the present embodiment, the step of introducing a gas containing hydrogen peroxide into the outer bag 15 is performed using a gas introduction means 30. The gas introducing means 30 in the present embodiment is a so-called bubbling device, which is connected to the supply line 32 extending toward the inside of the outer bag 15, the tank 34 connected to the supply line 32, and storing the hydrogen peroxide solution, and the tank 34. And an inert gas supply line 36 for supplying an inert gas therein.

  In the present embodiment, the gas supply line 36 has a gas source 36a that stores nitrogen gas. Therefore, the gas supply line 36 supplies nitrogen that can be obtained as an inert gas at a low cost. As shown in FIG. 1, the gas supply line 36 supplies an inert gas below the tank 34, and the inert gas supplied into the tank 34 is released into the aqueous hydrogen peroxide solution. Is done. A supply line 32 is connected to the upper side of the tank 34. The inert gas released into the hydrogen peroxide solution floats in the hydrogen peroxide solution and accumulates above the tank 34. The amount of the aqueous hydrogen peroxide solution in the tank 34 is kept substantially constant, and as a result, the pressure in the tank 34 increases due to the introduction of the inert gas. As a result, the gas recovered above the tank 34 is introduced into the outer bag 15 from the supply line 32 connected above the tank 34.

  The gas recovered above the tank 34 is a mixture of nitrogen gas and vaporized hydrogen peroxide and water mixed in the nitrogen gas passing through the aqueous hydrogen peroxide solution. The concentration of hydrogen peroxide contained in the mixed gas is the concentration, amount, temperature, etc. of the aqueous hydrogen peroxide solution in the tank 34, and the flow rate, pressure, temperature, etc. of the inert gas supplied from the gas supply line 36. Is substantially constant, it takes a substantially constant value equal to or lower than the saturated vapor pressure corresponding to the temperature of the gas. That is, the total amount of gas (mixture) introduced from the introduction means 30 into the outer bag 15 and the amount of hydrogen peroxide contained in the gas can be adjusted. As a result, in the step of introducing the gas containing hydrogen peroxide into the outer bag 15, a gas containing a desired amount of hydrogen peroxide can be introduced into the outer bag 15.

  Hydrogen peroxide has a strong sterilizing ability. Therefore, a small amount of hydrogen peroxide introduced into the outer bag 15 is sufficient. As a result, hydrogen peroxide introduced into the outer bag 15 can be prevented from permeating the packaging member 11 and being mixed into the contents.

  Further, from the viewpoint of adjusting the amount of hydrogen peroxide introduced, it is preferable to use the introducing means 30 under conditions such that hydrogen peroxide does not recondense in the supply line 32.

  By the way, in this step, the atmosphere in the outer bag 15 can be replaced with nitrogen gas. Therefore, particularly when the exterior bag 15 having a high oxygen barrier property is used, oxygen remaining in the exterior bag 15 may permeate the packaging member 11 of the package 10 and adversely affect the contents. Sex can be excluded.

  Thereafter, the outer bag 15 is sealed in a state containing the package 10 and containing hydrogen peroxide using a technique such as heat sealing. In this way, a packaged product 20 having the package 10 and the outer bag 15 that houses the package 10 as shown in FIG. 2 is obtained.

  As described above, according to the present embodiment, the gas containing hydrogen peroxide is introduced into the outer bag 15. Therefore, the inside of the outer bag 15 including the outer surface of the package 10 and the inner surface of the outer bag 15 can be sterilized by hydrogen peroxide introduced into the outer bag 15, for example, during storage or distribution of the package 10. it can. In addition, since hydrogen peroxide has a strong sterilizing ability, a small amount of hydrogen peroxide is required to be introduced into the outer bag 15. As a result, it is possible to suppress the hydrogen peroxide introduced into the outer bag 15 from being mixed into the contents.

  Further, according to the present embodiment, the gas containing hydrogen peroxide introduced into the outer bag 15 is obtained by releasing a predetermined gas into the hydrogen peroxide aqueous solution and collecting it on the hydrogen peroxide aqueous solution. It is done. According to such a packaging method according to the present invention, a gas containing hydrogen peroxide can be easily generated using a simple apparatus using the vapor pressure of hydrogen peroxide.

  Furthermore, according to the present embodiment, the atmosphere in the outer bag 15 can be replaced with an inert gas. Therefore, in particular, when the exterior bag 15 having a high oxygen barrier property is used, it is possible to suppress the influence on the contents due to oxygen existing in the exterior bag 15. Further, the inert gas used in this embodiment is nitrogen, which is convenient in that it can be obtained at low cost.

  Various modifications can be made to the above-described embodiment within the scope of the present invention.

  For example, in the above-described embodiment, an example in which a gas containing hydrogen peroxide is generated by so-called bubbling has been shown. However, the present invention is not limited to this, and other known methods for generating a gas containing hydrogen peroxide are adopted. be able to. In particular, it can be packaged using a known gas conventionally used for the stability of the chemical solution.

  In the above-described embodiment, first, an example in which a step of introducing a gas containing hydrogen peroxide into the outer bag 15 is performed after the step of housing the package 10 in the outer bag 15 is described. It is not restricted to this, Any process may be performed previously and you may make it perform both processes in parallel.

  Hereinafter, the package was packaged in an exterior bag by the method of the above-described embodiment.

What packed water (contents) in the packaging bag (packing member) was made into the package. An aluminum foil (5 mm × 30 mm) on which 2.1 × 10 ⁵ Bacillus subtilis spores were adhered was attached to the outer surface of the packaging bag of the package. The package with the aluminum foil attached was stored in an exterior bag.

  A tank with an internal volume of 500 ml was charged with 250 ml of an aqueous hydrogen peroxide solution, and nitrogen gas was fed into the aqueous hydrogen peroxide solution at a flow rate of 30 l / min. Nitrogen gas containing hydrogen peroxide was recovered above the tank by bubbling and was blown into the exterior bag for 20 seconds from the opening of the exterior bag to replace the atmosphere in the exterior bag. Then, the opening part of the exterior bag was heat-sealed, the exterior bag was sealed, and the packaged goods were produced. The concentration of the aqueous hydrogen peroxide solution stored in the tank was set to three concentrations of 8.8%, 17.5%, and 35.0%, and five packages were produced at each concentration. Moreover, the temperature was 25 degreeC also about any hydrogen peroxide solution.

  Each packaged product thus prepared was stored at 22 ° C. for 5 days, and then the outer bag was opened, and the aluminum foil to which the spores were attached was collected in a tryptic soy bouillon medium. Each collected aluminum foil was cultured at 35 ° C. for 7 days, and the presence or absence of survival of bacteria in each aluminum foil was confirmed.

  Moreover, the hydrogen peroxide concentration was measured by the oxygen electrode method for water (contents) stored in the packaging bag of the package.

The results are shown in Table 1. As shown in Table 1, a sufficient bactericidal effect was obtained by adjusting the aqueous hydrogen peroxide solution to an appropriate concentration. Moreover, the transfer of hydrogen peroxide into the water in the packaging bag was not observed.

FIG. 1 is a schematic view for explaining an embodiment of a packaging method and a method for producing a packaged product according to the present invention. FIG. 2 is a diagram showing an example of a packaged product obtained by the method shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Package 11 Packaging member 15 Exterior bag 20 Packaged product 30 Introduction means 32 Supply line 34 Tank 36 Gas supply line 36 Gas source

Claims (5)

A package formed by packaging the contents;
A sealed outer bag, comprising an outer bag containing the package together with a gas containing hydrogen peroxide ,
The packaged product characterized in that the gas containing hydrogen peroxide is a mixture of hydrogen peroxide and an inert gas . Storing the package in an outer bag;
Introducing the gas into the exterior bag;
The package according to claim 1, wherein the package is manufactured by a manufacturing method including a step of sealing the outer bag into which the gas is introduced while the package is stored .   3. The manufacturing method according to claim 2, wherein a gas released into the aqueous hydrogen peroxide solution and then floated on the aqueous hydrogen peroxide solution is introduced into the outer bag as the gas containing the hydrogen peroxide. Packaged product described in 1. The package according to any one of claims 1 to 3, wherein the inert gas is nitrogen. The package according to any one of claims 1 to 4 , wherein a plurality of packages are contained in the exterior bag.

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